Analysis
- max time kernel
65s - max time network
71s - platform
windows7_x64 - resource
win7-20220414-en - submitted
25/04/2022, 16:19
General
- Target 4a6faac7740c307fd5a0e23e0f5ea222.exe
- Size 695KB
- Sample220425-tsglvsghbp
- SHA256 4154bbb1bc580a874dc084a8017a6bb5a6243c29cddbf47dee3d0ca768b5936f
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.reiscoymarcos.com
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Port
587
-
Username
-
Password
Freespace88@
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.reiscoymarcos.com
-
Port
587
-
Username
-
Password
Freespace88@
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- suricata: ET MALWARE AgentTesla Exfil Via SMTP
suricata: ET MALWARE AgentTesla Exfil Via SMTP
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jGjAJo.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jGjAJo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB73F.tmp"2⤵
- Creates scheduled task(s)
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-
C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"C:\Users\Admin\AppData\Local\Temp\4a6faac7740c307fd5a0e23e0f5ea222.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmpB73F.tmp
memory/1336-68-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-64-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-71-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-73-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-63-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-66-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1336-67-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1488-56-0x0000000000490000-0x00000000004A2000-memory.dmp
memory/1488-55-0x0000000075271000-0x0000000075273000-memory.dmp
memory/1488-62-0x00000000022B0000-0x00000000022EA000-memory.dmp
memory/1488-54-0x00000000009B0000-0x0000000000A64000-memory.dmp
memory/1488-57-0x00000000089B0000-0x0000000008A2C000-memory.dmp
memory/1984-75-0x000000006E630000-0x000000006EBDB000-memory.dmp